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VashaNatasha [74]
2 years ago
11

Which expression converts 100 inches per minute to feet per minute ?

Mathematics
2 answers:
My name is Ann [436]2 years ago
8 0

To convert inches per minute to feet per minute, we can use dimensional analysis to help us cancel out the inches:

\frac{100in}{1min}*\frac{1ft}{12in}

Since we are going to cancel out units that are found on both the top and bottom of the fraction bars, we can cancel out units of inches, and thus we are left with feet per minute.

LenKa [72]2 years ago
3 0

Answer:

The expression is \frac{100inches}{1minute}*\frac{0.08333feet}{1inches}

Step-by-step explanation:

1 inch is equal to \frac{1}{12} feet, so:

\frac{1}{12}ft=0.08333 ft

So, if we have 100 inches per minute, to convert it to feet per minute, we have to use the expression:

\frac{100inches}{1minute}*\frac{0.08333feet}{1inch} = 8.333\frac{ft}{minute}

You need to have attention to put the unit that you need that convert on the denominator to operate and obtain your result.

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Answer:

z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29  

Step-by-step explanation:

information given

\bar X=10.6 represent the sample mean  

\sigma=4.1 represent the population standard deviation

n=45 sample size  

\mu_o =12 represent the value that we want to test  

\alpha=0.05 represent the significance level for the hypothesis test.  

z would represent the statistic

p_v represent the p value for the test

Hypothesis to test

We want to test if the true mean is less than 12, the system of hypothesis would be:  

Null hypothesis:\mu \geq 10  

Alternative hypothesis:\mu < 10  

The statistic is given by:

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

Replacing the info given we got:

We can replace in formula (1) the info given like this:  

z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29  

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Step-by-step explanation:

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7 0
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hodyreva [135]

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10 / 2 = 5

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Hope this helps!

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7.238/1000 using power of ten rules
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Answer: 69.38

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What is the greatest common factor of 15x^3y^2 and 20x^4y^4?
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<h3>What is the greatest common factor of 15x³y² and 20x⁴y⁴? ​</h3>

​<em>First we have to find the factors of 15x³y²</em>

<em>15x³y² = 3 * 5x³y² ​</em>

<em>​Then we have to find the factors of 20x⁴y⁴</em>

<em>​20x⁴y⁴ = 2²x¹y² * 5x³y²</em>

<em>Now we have to find the common factors to both numbers.​</em>

<em>The common factors are </em><em>5x³y²</em>

Answer : GCF = (15x³y²,20x⁴y⁴) = 5x³y²​

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